Cap for automobile radiators



35 tion.

MARYE; .TOWLER, or'nnivi'rns fir areas,

Applieationfiled October 1, 192a; s fi ajriidi aoeni'a. i

This invention relates to an improved cap Formed on the peripheral wal f theshell A I i for the radiators of automobile engines are aligned oppositely disposed radial tubes? 7 One. object of the invention is to provide a closed'at'thei'r' outer ends to provide water a p radiator cap having vent tubes to coact w th ,checks' 8' and mounted the samefvertical i the overflow pipe of a radiator for providing plane with said tubes are oppositely presented 55,

- a circulation of air above the body of water substantially U-shaped tubes 9, said tubes bein said radiator. ingprovided'with short upper legs 10 and Another object 'of'the invention is to prolong lower legs llclosed at their outer ends to J Vide a radiator cap'wherein the ventvtubes provide water checks 12.. Connecting the I 10 will retard the movement of boiling water I lower legs 11 ofthe U-shaped tubes'with the. col-Y through said tubes to preventawaste of the inner end portions of the radial tubes 7 are water. i i p 1 tubes 13 tilted obliquely and presented in op A further object of the invention is to -pro posite directions,said tubes 13 having the upvide a radiator cap wherein the vent tubes per ends integral with the, legs 11 and thelow-, 15 will provide. handles for facilitating the 're-, er enclsint-egral with the inner end-portions of '65} moval of the cap from the filler neck of the the radial tubes 7 Thewater checks 8'proradiator, s c 1 T v'ide primary retarding means for water And a still further object of the, invention surging upwardly through the neck-1, and the s is to provide a radiator cap utilizing mean Water checks 12 provide secondary retarding I for condensing vapors such as are freed from means for the water; The bends of the U- 7 boiling water or antifreeze solutions, so that shaped-tubes provide a thirdretarding means i the products of condensation will be per for thefwater. w V v initted to flow back into the radiator. J Due to the slight vacuumvformed adjacent Other objects of the invention not specifithe out-erendsof the'short upper legs 100i" cally Inentionedin the foregoing will be a the U-shaped tubes when the automobile is in 7 parent during the course of the following o motion, said tubes will coact with the over-.

scription. v flow" pipe 2 to produce admit of air in the In the accompanying drawings: 7 r I radiator above the'body of water carried Figure 1 is a sectionalview'of'the device therein to assist in keeping the water cool. a 1 showing it in position attached" to the filler -'I"he tubes'alsoiprovidehandles to facilitate so. neck of a radiator, I i 1 the removal of the shell from the filler neck Figure 2 is a top plan view of the device, when it is desired to add more water. If,

Figure 3 1s a fragmentary sectional view steam ishouldbe generated in the radiatonit showing a slight modification of the inven would pass out through the-tubes, and if the i g w j H water should boil and be caused to surgeup Referring moreparti'cularly to the drawwardly, it would belretarded by the checks ings, the numeral :1 indicates the usual filler and. the bends of'the U-shaped tubes, and

neck of an automobile-radiator, and extend-u would be 'caus'e dto flow back into the radiaf I ing into said radiator and into the filler'neck tor. v 1 a r is a conventional overflow pipe 2, Open at its Referring m re particularly to the modifilower end to the atmosphere cation of the invention, as shown in Figure V Screwed into the fillerneck is a substan- 3 of the drawing," the numeral 14 indicates tially cylindrical shell 3 closed at its upper the outer endportion of the, short leg of one "end byan end wallet and reduced-at its lower} of th ul h dtub :v Removabl cr w d I d portionto form a shoulder 5' coa'cting" on-said end is arcap'lo and overlying the in-. 1 withthe upper edge of the filler neck. to pro- Y-ner end wall-of said cap is a washer 16 for vide a sealed joint. g sealing the tube when so desired, particular- Formed on the upper end wall Of tlle shell ly in" winter;- A similar mp1s employed on is a knob 6 t0 facilitate the removal Of the the oppositelypresenteditube, Aside from v 50 Cap from the filler 3 0f t rthe; foregoing, the modification of the invention is identical with thepreferred form and- ,functions in like manner.

claim: I

A radiator cap including a shell, 0pp0site 1y presented laterallydispo sed tubes extending from the shell, said tubes beingvclosed at their ends to provide water checks outward- Having thus described the inventionQI 71y inclined tubes upstanding from said laterally disposed tubesnear their inner ends, and

oppositely presented U-shape'dtubes having relatively short upper legs open at their ends and relatively long lower"legs 'connected, medially Withsaid inclined tubes and closed at their ends to provide Water Checks, all Of 7, said tubes cooperating to retard the upward flow ofwater from a radiator.

testimony whereof I'afiix my signature. MARY E. TOWLER. [1,. 5.] 

